WNE #2 Flashcards
data transmission
unicast
broadcast
multicast
hub
sends data to every computer connected to it
unicast
where one computer sends traffic to another computer
network interface card
decides whether or not to process data
Understanding Broadcast Traffic
transmitted to one computer and goes to all computers within a subnet
broadcast traffic
one to all communication, doesn’t cross subnets
multicast
transmitted from one computer to many other computers, only transmits to people who have joined the multicast group
Collision Domain
group of devices on the same segment that are subject to collisions
broadcast domain
group of devices on a network that can receive broadcast traffic from each other
switch
connects computers in a network, isolates each computer into its own collision domain
routers
connects networks, move packets between networks or subnets
hub
takes any data sent to it and forwards it to all ports
bridge
connects two or more network segments together
firewalls
controls traffic and protects your computer from allowing malicious traffic to flow in and out.
network based firewall
when there is a firewall separating the entire network and the internet
host based firewall
when there are multiple firewalls on each computer
straight through cable
wires are connected to the same pins and are connected to the switch directly
crossover cable
specific wires are crossed on opposite connectors of the cross over cable, used to connect switches and other network devices together
Transmission Control Protocol/Internet Protocol (TCP/IP)
primary protocol used today
services
some are automatic some are not each is activated by another
extranet
allows users to connect from other locations to the server
perimeter network
network between the Internet and the intranet
intranet
internal network
